Modifications:
Cast on 52 (her sock sizing seems too large)
I prefer size 0 for socks
Cast on 52 (next time do 54 or 56?)

Should have started with 54 then decreased 2 after ribbing
k2p1 rib for 1 1/4”
Change to stockinette
Knit to 2”, start heel stitch on 26 sts
Knit 29 rows, turn heel (purl row)
Pick up 16 for gusset
3 rows after gusset do 16 rows blending b
12 rows b
16 rows blending c

Startoe at 7 1/4”

First photo looks blue but it is really teal/jade green

32 gms color A
8 gms color B
10 gms color C
50 gms total

Measurements
Cuff to bottom of heel 4”
Width 3 1/2”
Foot length 9”⁰